10.4122/1.1000001383
Brzezinska, A.
A.
Brzezinska
Zawilski, M.
M.
Zawilski
The effect of combined wet weather sewage quality on the biological treatment process. Case study of Lodz
DTU Library, Technical University of Denmark (DTU)
2005
Conference presentation
Combined sewerage system
fractions of contaminants
biological treatment
modelling
Technical University Of Lodz, Department Of Environmental Engineering
Department Of Environmental Engineering
Technical University Of Lodz
2005
en
10.4122/1.1000001384
text/xml
In the paper, quality of combined sewerage inflow in the aspect of biological treatment was analysed. Proportion of quality parameters and fractions of COD and TKN as well as alkalinity in the inflow to the Group Wastewater Treatment Plant in Lodz were determined. The research revealed a distinct increase of inert fractions during wet weather caused by an increasing portion of contaminants attached to suspended solids. Modelling of the biological process made it possible to investigate the effect of the raw wastewater quality variations on the effluent quality. This effect turned out to be significant when average effluent parameters like COD and total nitrogen are concerned.